यदि \(f:{1,2,3,4,5}\to{0,1}\) को (f(x)=0) जब (x) सम हो और (f(x)=1) जब (x) विषम हो, तो (f^{-1}({0})) क्या है?
If \(f:{1,2,3,4,5}\to{0,1}\) is given by (f(x)=0) when (x) is even and (f(x)=1) when (x) is odd, what is (f^{-1}({0}))?
Explanation opens after your attempt
B. ({2,4})
Concept
The value (0) is produced by even inputs, namely (2) and (4). A preimage contains elements of the domain, not of the codomain.
Why this answer is correct
The correct answer is B. ({2,4}). The value (0) is produced by even inputs, namely (2) and (4). A preimage contains elements of the domain, not of the codomain.
Exam Tip
(0) वे इनपुट देते हैं जो सम हैं, यानी (2) और (4)। पूर्वछवि में डोमेन के अवयव आते हैं, सहप्रांत के नहीं।
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